Festoon-stitch-sewing machine



Miu, 1925. 1,545,810

w. BRAsE FESTOON STITCH SEWING MACHINE Filed Sept. 5, 1925 LSV 4 11 l l /.46 l 18 5? zo $7 Li 'Afm 27 f (Vm nr 2r .ma @gj 17 I y/ L 'E wmilnvl-Iu 'fly u y l". lzfl. 5 zs'fl!l 24 zu 2 f-w :L 4c a g n /f//Q-wm 24 w nuwn u I: l*

ws s Jnvezzfor 734W JW@ Patented July 14, 1925.

tiene PATENT FnsrooN-snrcH-SEWING niet?.HIVNi'aY Application inea september 5,1923. .semaine 661,085.

To all fwriom t may concer/n.:

Be it known that l., llfmrinmr Blaise, a citizen of the German'lepublic, and resident of Berlin-Treptow, Germany. have invented new and useful Improvements in a Festoon- Stitch-Sewing Machine, of which the followin is a specification. Y

y invention relates to anembroidery machine of the sewing-machine type, in which the fabric to be embroidered is fed byk a feed dog.

The principal object oi' my invention is t0 provide acontroldevice in a sewing-machine, wherebythe feed dog, which is arranged in the immediate vicinity of the needle stitch point, and which, while reciprocating vertically, cooperates Jfrom below with the presser-foot to feed the fabric, is moved horizontally in different directions. automatically by a jacquard mechanism, as ya result oi which embroidery yof thegreatest variety olv design can be easilyproduced.

Another object ofthisv'invention is to pro,`

vide such construction of thecontrol device'L that the means imparting the horizontal movements to` saidileed dog are only indirectly rinliuenced by said jacquard inechaf nism,l so that the jacquard or pattern cards or the like of-such mechanism can begreatly simplifiedl and easily and cheaply manufac tured. e

With these and other objects in View, my invention consists in the construction, combination and'arrangement of parts as willbe hereinafter fully `described and defined in the appended claims.`

In the accompanying drawing showing one embodiment of my invention and in which similar reference characters ldenote corresponding parts, Fig. 1 is a vertical section of my new feeddO-g control device of a sewing-machine; Fig.2`is a plan view thereofand Fig. 3 is a diagrammatical plan view on a greatly reduced scale of a part of .saidv control device.

Of the sewing-machine, which in itself is of well-known construction.l only so much is shown in the drawing, as is necessary to clearly understand my invention, 3 being the sewing needle, 2 the-,p-resser-oot, 45 the table and 1 the, feed dog, arranged'in the immediate vicinity ofthe needle stitch point andadapted in its usual quadrangle motiontobe pressed periodically froml below against on said "feed dog.

control device to' extend ltra'nsversel'y of the machine. Thevertical reciprocatory vmotion is imparted. to the .feed dogallfrom e @am 4,4 acting ,from belowk against said arm .4. `,and fixed on a 4shaft 43 driven Afrom shaft l-2O through cog wheels y40, 4I and.V 42. 'This' construction -lpermits the transmission. ofthe.

horizontal movement to said-feed dog, irrespective of theposition. theHla-tter occupies in the vertical plane..`

The sha-'ft 5 is supportedin the Side; walls,

18,k 18a of' the machine frame soas. to not only oscillatory,v but also displaceable longitudinal direction, and is adapted,

movements to impart or transmit the differ'- ent horizontal` movements to @the feed dog..

These movements are adapted to be. anto` matically controlled. through ajacquard mechanism to `beihereiiiagtter described. llo this end,` ona stationaryshaft 17 supported in the walls 18', 1 8a parallel to and above-,thesha-ft `5.` are .mounted` parallel oscillatory framesv I15, 15a extending at aA rightl angle thereto. One off said frames, .say`15, serves toy transmit oscillatory motion to `said shaft,`

5 andthe other 15a, longitudinal movement. Eachof .said frames carries. a short shaft 16 on'which are fulcrumed a. ,pairiofparallel levers 14.` These levers `are' each under the'v influence of spiral springs 27, whichetendto draw, the same and. consequently the frames 15, 15a upwardly. Fixedto andN arranged nearthe` iree end of each of said `levers 14,', is an abutment tongue` 29z and supportedl about centi'gally'by eaclrarm 14, isa-i roller: 19. Each of the fo-uirollersis adapted-to tightly' bear against a separate cam 21, there.

being oursuch cams 'fixed on the driving shaft 2O extending `above and across. said..

arms 14 and journalled'in the walls'n18, 18at ThroughtheA operation of, these cams; 21, the arms 14(aree-,continuously oscilla-ted on their,

shafts 16.y `Neanthegiree endoffeachfname- 15, 15a,.is pivotediaEpair ofcouplers `orfcou.v Y pling kmembers 13," which are adapted to be kthrough these oscillatory and lmgitudinaly actuated independently of each other by means controlled directly from the jacquard mechanism. Thecoup-ling members 13 are so disposed that, when in normal position, they are out of contact with the tongues 29 of the corresponding levers 14, but when any one of them is tilted by the action of the jacquard mechanism, it will pass Vinto the path of the tongue 29 lof the corresponding lever 14, so that at the downward stroke of the latter, it will effect a coupling between said lever `|andthe correspondingframe 15 or 15a, causing the latter to be carried along in the downward swing. 32 denotes. a `set screw serving as adjustable stop for the os- 'cillatoiyV frames 15, 152A "This stop,`A` is necessary 'togpreventv Vthe frames 15, l15a from swinging toohighu'pwardly under the action of the springs`27, when the corre'- sponding tongues-`29 dofnot'engage a memlevers 14, say ofthe frame 15, when coupled ber 13. 'By the vdownward swing' of any one of the frames 15,` 15, vmovement is transmitted to the shaft. One'fof the pair` kof thereto, is adapted to transmit to the shaft "oscillatory'motion in' one direction', the

rother of said pair, 4inv ,opposite` direction,

lwhile one of thepair. of levers 14 ofthe frame 15a,when coupled thereto,.is adapted Vto transmit longitudinal motion to said shaft in one direction and the other of this pair, incpp'ositev direction; The cams21actuating the 'arms14 thro-ugh the rollers 19 are Aeach so shaped and displaced relative to one another,L that through their action,

the frames 15, 15?l at the proper timeof each operative stroke willeffect a` corresponde ing movement of the'feed dog.rk

The transmission of motion from the oscillatory frame 15 to the shaft 5 is'accomplished by means .of anarm 22 fixed to the shaft and pressed by a: spring `2.3 vincontact with a roller 24 carried by 'the frame 154. vThis roller'is supported on ,a vertical pin 24a carried by a block 24,.` The latter isjformed with a vertical ,threaded bore 24 toY workfas a nut o-n a screw spindle 26 carriedby lsaid frame 15 and is capableof beingadjusted by said screw in vertical vdirection. By such adjust-ment, the roller 24n can be brought nearer'or fartheifrom the shaft 5 and the amplitude ofthe'lever 22 cooperating with said roller decreased or; increased.

.The oscillatory movement of the shaft 5 imparts horizontal movement t-o the feed dog in the forward and backward direction relative to the fabric feedand bythe aforesaid adjustmentf'of the amplitude of: the

` swinging movement transmitted to the arm 22, the fabricfeed and length 'of stitch can be varied, i y c l p The longitudinal movement is transmitted y tothe shaft5 from the frame 15a. LTo this end, t-he latter is connected by" means of a" rod 37 te, onearm of-abell-crank'lever 37 ,against onel arm 35 of a second bell-crank lever, the other arm 34 of which acts against alcol-lar fixed to said shaft 5, which, by a spring 33' is pressed against said arm'. `When the frame 15a is oscillated through the medium of one of its pair of levers 14 in the aforedescribed manner, the arm 34 of the bell-crank lever 35,34 will displace the shaft longitudinally against the action of the spring 33 say to the right and when the same is oscillated through the mediumof the other lever, the shaft 5 will be moved to the left. l f Y The jacquard-l mechanism for Y actuating thecoupling members 13v comprises a drum 8 having uniformly distributed cavities 8 on its circumference and, fixed on a shaft 82 rotatively supported inthe frame of the machine, Aand adapted lto b e'suitably driven from the shaft 2O through 'cog-wheels 46, 47 and '48. "Suitably guided over this drum, isa jacquard pattern ycardy or the like 7 formed with four parallel rows of perforations 9 corresponding to the desired four movements to be imparted to the feed dog.

The non-perforated parts ofthe bander card '7 cover the cavities in conformity with ,the design. Cooperating with vthis card or ban-d fare four bell-crank leverisfoscillatorily mounted side by side on a stationary shaft 11. One arm 1Y0 ofea'ch of said bellcrank levers bears on 'the card 7 andy the other 12 extends vertically downward to be opposite and bear against the corresponding coupling member 13'. VEach bell-crank lever is actuated by'a spring 30, whereby close contact of its arms with the card is effected. The coupling memberl under the influence ofsprings 28 are normallypressed againstv the lower ends ofthe arms 12 lof thel corresponding"bell-crank levers. i The rows of perforations 9 in the card are made to be in range with the corresponding arms 10 of the bell-cranks. When, as the card' is fed.v over the drum, a perforation happens to arrive oppositev the "arm 10 of the correspond.-y ing bell-crank, said arinis permitted to enter the cavity of the drum, as a result of which the opposite arm 12A'willthrust the corresponding coupling member 18 into the path of the corresponding-lever 14 and thereby effect a coupling between the lat-ter and the drumS uncovered'by a perforation yd inthe band` 7, the other` arm ,12. lof said lever ,v throws the 'corresponding coupler 13"'into the path of the tongue or abutment2'9`.i In

consequence thereof, the corresponding leverV 'ill l (if) lli) 14, during its downward stroke, will swing with it the corresponding frame l or 15a. Wfhen vthe arm leaves the cavity of the drum, the coupler 13, under the action of its spring 2S will return to its initial kposition. The return stroke of each lever 14 is effected by its spring 27 under the control of the corresponding cam 21, whereby the movements are properly timed with the movements of the needle. The oscillation imparted to each frame 15, 15, through the v levers 14, is then transmitted to the shaft 5 Cil inthe aforedescribed manner, so that the feed dog will be moved horizontally in any of the directions named or through the simultaneous oscillation of both frames in a diagonal direction.

I am aware that embroideryV machines of the sewing-machine type are known in which the fabric feed is Aautomatically controlled, but while with the known machines the automatic device directly controls the feed member, with my invention this is effected through the intermediary of coupling members, which enables me to employ a simple jacquard device, with a jacquard card that can be cheaply produced, so that any number of such cards can be kept in stock to be exchanged, when different designs are required. As compared with the existing automatic fabric feed controlling devices on such sewing-machines, my invention, by reason of the indirect control, also has the advantage that the jacquard card can be readily and quickly replaced in case of wear or damage and without any apipreciable expense.

vWhat I cla-iinis 1. In a sewingmachine of the character described, a fabric feed member operating below the fabric, means for transmitting motion to said feed member in different directions, driving means, and automatically controlled means for coupling said -driving means to said motion transmitting means to effect movement of said feed member in a predetermined direction.

2. In a sewing-machine of the character described, a fabric feed member operating below the fabric, means for transmitting motion to said feed member in different directions, driving means and a plurality of automatically controlled members, each for tory member to said motion transmitting means to effect movement o-f said feed dog in a predetermined direction.

4. In a scarring-machine of the character described, a vertically reciprocated fabric feed dogoperating below the fabric, means for transmitting horizontal motion to said feed dog in different directions, driving means, and jacquard controlled mea-ns for coupling said driving means to said motion transmitting means to effect horizontal movement o-f said feed dog in a predetermined direction'.

In a. sewing-machine of the character described, a fabric feed dog operating below the fabric,means for reciprocating said feed dog vertically, means for transmitting horizontal motion to said feed dog in different directions, driving means, and jacquard controlled means for coupling said driving means to said motion transmitting means. to effect horizontal movement of said feed vdog rin a. predetermined direction..

(i.A In a sewing-machine of the character described, a. fabric feed dog operating below the fabric, a cam for reciprocating said feed dog vertically, means for transmitting hori- Vzontal motion to said feed dog in different directions, driving means, and jacquard con? trolled means Vfor coupling said driving means to said motion transmitting means to effect horizontal movement of said feed dog in a. predetermined direction.

7. In a sewing-machine of the character described, a vertically reciprocated fabric feed dogoperating below the fabric, means for transmitting horizontal motion to said feed dog in different directions, including an oscillatory and longitudinally displace able shaft operatively connected to said feed dog, driving means and jacquard controlled means for coupling said driving means to said motion transmitting means to effect horizontal movement of. said feed dog in a predetermined direction.

8. In a sewingmachine of the character described, a vertically reciprocated fabric feed dog operating below the fabric, means for transmitting horizontal motion to said feed dog in different directions, including a plurality of oscillatory arms, an oscillatory and longitudinally displaceable shaft operatively connected to said feed dog and actuated from said arms, driving means anda plurality of jacquard controlled members, each for independently coupling a. correspending oscillatory arm to said driving means to effect horizontal movement of said feed dog in a predetermined direction.

, 9. In a sewing-machine of tliecharacter described, a vertically reciprocated fabric feed dog operating below the fabric, means for transmitting horizontal motion to. said feed dog in different directions, including a plurality of oscillatory frames, a pai-r of 'oscillatory arms carried by each of' said llames, an oscillatory and longitudinally displaceable shaft operatively connected to said feed dog and actuated from said frames and means for adjust-ing the amplitude of the oscillatory motion of said shaft, driving means and jacquard controlled means for independently coupling each arm to its corresponding frame.

l0. In a sewing-machine of the character described, a vertically reciprocated fabric feed dog operating below the fabric, driving means, means for transmitting horizontal movement to said feed dogin different directions, including a. plurality of oscillatory members, jacquard mechanism, and aplurality of coupling members controlled :trom said jacquard mechanism for coupling any one of said oscillatory members to said driving means, to effect horizontal movement of said feed dog, according to a predetermined design.

ll. In an embroidery-machine'of the char acter described, a universally movable fabric feed dog operating below the fabric, driving mea-ns and automatically controlled means for coupling said driving means to said feed dog to .cause the latter to move in predetermined directions.

l2. In an embroidery machine of the characterdescribeda universally movable fabric feed dog operating below thefabric, driving means and a plurality of pattern controlled members y:tor independently coupling said driving means to said feed dog to cause the latter to move in predetermined directions. 13.l in. an embroidery machine of the character described, a universally movable fabric feed dog operating below the fabric, driving means, including a plurality of constantly oscillating members, and a plurality of pattern controlled members for independently 'coupling said oscillating members to said feed dog to cause the latter to move in pr determined directions. p

WILHELM ERASE.' 

